[jira] [Created] (FLINK-24868) Use custom serialization for storing checkpoint metadata in CompletedCheckpointStore

["Dawid Wysakowicz (Jira)" <ji...@apache.org>]

Dawid Wysakowicz created FLINK-24868:
----------------------------------------

             Summary: Use custom serialization for storing checkpoint metadata in CompletedCheckpointStore
                 Key: FLINK-24868
                 URL: https://issues.apache.org/jira/browse/FLINK-24868
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
            Reporter: Dawid Wysakowicz


We are using a java serialization for storing {{CompletedCheckpoint}} in {{CompletedCheckpointStore}}. This makes maintaining backwards compatibility of entries stored hard, even between minor versions. Maintaining this kind of backwards compatibility is required for ever considering rolling upgrades.

In particular, we do have {{MetadataSerializer}} for storing checkpoints metadata in a backwards-compatible way.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)